/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.0-0f64333
[2020-10-27 16:15:20,779 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 16:15:20,782 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 16:15:20,820 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 16:15:20,821 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 16:15:20,823 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 16:15:20,824 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 16:15:20,827 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 16:15:20,829 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 16:15:20,831 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 16:15:20,832 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-27 16:15:20,833 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 16:15:20,834 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 16:15:20,835 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 16:15:20,837 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 16:15:20,839 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 16:15:20,840 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 16:15:20,842 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 16:15:20,844 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 16:15:20,847 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 16:15:20,849 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 16:15:20,850 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 16:15:20,852 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 16:15:20,853 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 16:15:20,857 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 16:15:20,857 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 16:15:20,858 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 16:15:20,859 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 16:15:20,860 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 16:15:20,861 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 16:15:20,862 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 16:15:20,863 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 16:15:20,864 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 16:15:20,865 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 16:15:20,866 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 16:15:20,867 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 16:15:20,868 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 16:15:20,868 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 16:15:20,869 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 16:15:20,870 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 16:15:20,871 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 16:15:20,883 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-27 16:15:20,947 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 16:15:20,948 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 16:15:20,949 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 16:15:20,950 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 16:15:20,950 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 16:15:20,952 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 16:15:20,952 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 16:15:20,952 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 16:15:20,952 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 16:15:20,952 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 16:15:20,953 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 16:15:20,954 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 16:15:20,954 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 16:15:20,954 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 16:15:20,954 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 16:15:20,955 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 16:15:20,955 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 16:15:20,955 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 16:15:20,955 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 16:15:20,955 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 16:15:20,956 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 16:15:20,956 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:15:20,956 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 16:15:20,957 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 16:15:20,958 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 16:15:21,392 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 16:15:21,419 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 16:15:21,422 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 16:15:21,423 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 16:15:21,426 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 16:15:21,427 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label33.c
[2020-10-27 16:15:21,515 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8/FLAGf9c135b44
[2020-10-27 16:15:22,926 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 16:15:22,928 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label33.c
[2020-10-27 16:15:22,984 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8/FLAGf9c135b44
[2020-10-27 16:15:23,071 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3abf4a4/a5d91dcd8fc74656bf3995dd9c06a8c8
[2020-10-27 16:15:23,075 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 16:15:23,083 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 16:15:23,087 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 16:15:23,087 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 16:15:23,093 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 16:15:23,094 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:23" (1/1) ...
[2020-10-27 16:15:23,103 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cf01ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:23, skipping insertion in model container
[2020-10-27 16:15:23,103 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:15:23" (1/1) ...
[2020-10-27 16:15:23,112 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 16:15:23,408 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 16:15:25,656 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:15:25,676 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 16:15:26,912 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:15:26,989 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 16:15:26,990 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26 WrapperNode
[2020-10-27 16:15:26,990 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 16:15:26,992 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 16:15:26,993 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 16:15:26,993 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 16:15:27,008 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,011 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,164 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,165 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,437 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,500 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,586 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
[2020-10-27 16:15:27,683 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 16:15:27,685 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 16:15:27,685 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 16:15:27,685 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 16:15:27,687 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:15:27,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 16:15:27,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 16:15:27,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 16:15:27,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-27 16:15:27,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-27 16:15:27,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-27 16:15:27,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 16:15:27,773 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-27 16:15:27,773 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-27 16:15:27,773 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-27 16:15:27,773 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-27 16:15:27,773 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 16:15:27,774 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 16:15:27,775 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 16:15:27,775 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 16:15:27,775 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-27 16:15:27,775 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 16:15:27,775 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 16:15:27,776 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 16:15:27,776 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 16:15:27,776 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 16:15:27,776 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 16:15:27,776 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 16:15:37,798 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 16:15:37,800 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-27 16:15:37,808 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:37 BoogieIcfgContainer
[2020-10-27 16:15:37,809 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 16:15:37,811 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 16:15:37,811 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 16:15:37,818 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 16:15:37,818 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:15:23" (1/3) ...
[2020-10-27 16:15:37,819 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd1e69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:37, skipping insertion in model container
[2020-10-27 16:15:37,820 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:15:26" (2/3) ...
[2020-10-27 16:15:37,820 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd1e69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:15:37, skipping insertion in model container
[2020-10-27 16:15:37,820 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:15:37" (3/3) ...
[2020-10-27 16:15:37,822 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label33.c
[2020-10-27 16:15:37,835 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 16:15:37,843 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 16:15:37,859 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 16:15:37,912 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 16:15:37,912 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 16:15:37,912 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 16:15:37,912 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 16:15:37,912 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 16:15:37,912 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 16:15:37,913 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 16:15:37,913 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 16:15:37,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-27 16:15:38,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2020-10-27 16:15:38,142 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:15:38,145 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:15:38,145 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:15:38,152 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:15:38,154 INFO  L82        PathProgramCache]: Analyzing trace with hash 1880576681, now seen corresponding path program 1 times
[2020-10-27 16:15:38,165 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:15:38,166 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951897904]
[2020-10-27 16:15:38,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:15:39,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:39,810 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:44,240 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:44,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1685
[2020-10-27 16:15:44,241 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:44,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5017
[2020-10-27 16:15:44,244 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:44,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 16:15:44,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 16:15:44,244 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1676
[2020-10-27 16:15:44,244 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 16:15:46,113 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:15:46,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:15:46,149 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:15:46,172 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:15:46,173 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:15:46,173 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:15:46,173 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-10-27 16:15:46,173 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:15:46,173 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:15:46,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:15:46,174 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:15:46,174 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:15:49,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:15:49,263 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951897904]
[2020-10-27 16:15:49,265 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 16:15:49,266 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-27 16:15:49,267 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815453595]
[2020-10-27 16:15:49,276 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-27 16:15:49,276 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:15:49,294 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-27 16:15:49,294 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-27 16:15:49,296 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 5 states.
[2020-10-27 16:16:25,513 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:16:25,514 INFO  L93              Difference]: Finished difference Result 8239 states and 15621 transitions.
[2020-10-27 16:16:25,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-27 16:16:25,516 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1661
[2020-10-27 16:16:25,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:16:25,598 INFO  L225             Difference]: With dead ends: 8239
[2020-10-27 16:16:25,599 INFO  L226             Difference]: Without dead ends: 5945
[2020-10-27 16:16:25,619 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-27 16:16:25,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5945 states.
[2020-10-27 16:16:25,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5826.
[2020-10-27 16:16:25,928 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5826 states.
[2020-10-27 16:16:25,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 10165 transitions.
[2020-10-27 16:16:25,964 INFO  L78                 Accepts]: Start accepts. Automaton has 5826 states and 10165 transitions. Word has length 1661
[2020-10-27 16:16:25,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:16:25,971 INFO  L481      AbstractCegarLoop]: Abstraction has 5826 states and 10165 transitions.
[2020-10-27 16:16:25,971 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-27 16:16:25,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 5826 states and 10165 transitions.
[2020-10-27 16:16:26,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2020-10-27 16:16:26,123 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:16:26,125 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:16:26,125 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 16:16:26,126 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:16:26,127 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:16:26,129 INFO  L82        PathProgramCache]: Analyzing trace with hash -1392747890, now seen corresponding path program 1 times
[2020-10-27 16:16:26,129 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:16:26,129 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343867992]
[2020-10-27 16:16:26,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:16:26,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:26,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:26,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:31,441 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:31,442 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1713
[2020-10-27 16:16:31,442 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:16:31,442 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5119
[2020-10-27 16:16:31,443 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:31,443 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 33
[2020-10-27 16:16:31,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-10-27 16:16:31,444 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1279
[2020-10-27 16:16:31,444 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 16:16:35,092 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33
[2020-10-27 16:16:36,665 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:16:36,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:36,670 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:36,676 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:36,676 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:16:36,676 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:16:36,676 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 16:16:36,677 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:16:36,677 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:16:36,677 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:36,732 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:16:36,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:16:36,744 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:16:36,784 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:16:36,785 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-27 16:16:36,785 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:16:36,785 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-27 16:16:36,785 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:16:36,785 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-27 16:16:36,786 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:16:36,786 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-27 16:16:36,786 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:16:56,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:16:56,240 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343867992]
[2020-10-27 16:16:56,240 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:16:56,240 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-10-27 16:16:56,241 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505334347]
[2020-10-27 16:16:56,245 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-27 16:16:56,245 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:16:56,246 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-27 16:16:56,247 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600
[2020-10-27 16:16:56,247 INFO  L87              Difference]: Start difference. First operand 5826 states and 10165 transitions. Second operand 25 states.
[2020-10-27 16:16:57,391 WARN  L193               SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-10-27 16:16:57,791 WARN  L193               SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107
[2020-10-27 16:17:04,772 WARN  L193               SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106
[2020-10-27 16:17:06,280 WARN  L193               SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105
[2020-10-27 16:17:08,908 WARN  L193               SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-27 16:17:09,285 WARN  L193               SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-27 16:17:20,230 WARN  L193               SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-27 16:17:20,623 WARN  L193               SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-27 16:17:31,387 WARN  L193               SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-27 16:17:31,765 WARN  L193               SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102
[2020-10-27 16:17:35,897 WARN  L193               SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101
[2020-10-27 16:17:43,048 WARN  L193               SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94
[2020-10-27 16:17:43,413 WARN  L193               SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-10-27 16:17:48,028 WARN  L193               SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98
[2020-10-27 16:17:55,034 WARN  L193               SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96
[2020-10-27 16:17:56,163 WARN  L193               SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90
[2020-10-27 16:17:56,492 WARN  L193               SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92
[2020-10-27 16:18:19,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:18:19,342 INFO  L93              Difference]: Finished difference Result 18163 states and 32515 transitions.
[2020-10-27 16:18:19,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-10-27 16:18:19,349 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 1687
[2020-10-27 16:18:19,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:18:19,419 INFO  L225             Difference]: With dead ends: 18163
[2020-10-27 16:18:19,419 INFO  L226             Difference]: Without dead ends: 12343
[2020-10-27 16:18:19,440 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892
[2020-10-27 16:18:19,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12343 states.
[2020-10-27 16:18:19,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 12331.
[2020-10-27 16:18:19,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12331 states.
[2020-10-27 16:18:19,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 17246 transitions.
[2020-10-27 16:18:19,818 INFO  L78                 Accepts]: Start accepts. Automaton has 12331 states and 17246 transitions. Word has length 1687
[2020-10-27 16:18:19,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:18:19,821 INFO  L481      AbstractCegarLoop]: Abstraction has 12331 states and 17246 transitions.
[2020-10-27 16:18:19,821 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-27 16:18:19,823 INFO  L276                IsEmpty]: Start isEmpty. Operand 12331 states and 17246 transitions.
[2020-10-27 16:18:19,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2020-10-27 16:18:19,888 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:18:19,889 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 16:18:19,889 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 16:18:19,890 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:18:19,891 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:18:19,892 INFO  L82        PathProgramCache]: Analyzing trace with hash -98443409, now seen corresponding path program 1 times
[2020-10-27 16:18:19,892 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:18:19,892 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390844932]
[2020-10-27 16:18:19,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:18:20,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:20,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:20,452 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:24,715 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:25,241 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1725
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5197
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 16:18:25,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-27 16:18:25,243 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1674
[2020-10-27 16:18:25,243 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:26,310 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:18:26,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:26,316 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:26,323 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:18:26,324 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:18:26,325 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:18:26,325 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:26,348 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:18:26,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:18:26,368 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:18:26,400 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:18:26,400 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-27 16:18:26,400 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:18:26,400 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-27 16:18:26,401 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:18:26,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:18:26,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:18:26,401 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-27 16:18:26,401 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:18:29,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:18:29,281 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390844932]
[2020-10-27 16:18:29,281 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:18:29,282 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-27 16:18:29,282 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526710263]
[2020-10-27 16:18:29,287 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-27 16:18:29,288 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:18:29,288 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-27 16:18:29,289 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-27 16:18:29,289 INFO  L87              Difference]: Start difference. First operand 12331 states and 17246 transitions. Second operand 6 states.